CN217641419U - Cold starting device of fuel cell system - Google Patents
Cold starting device of fuel cell system Download PDFInfo
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- CN217641419U CN217641419U CN202220625242.XU CN202220625242U CN217641419U CN 217641419 U CN217641419 U CN 217641419U CN 202220625242 U CN202220625242 U CN 202220625242U CN 217641419 U CN217641419 U CN 217641419U
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- humidifier
- cell system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model relates to a fuel cell technical field discloses a cold starting drive of fuel cell system, including first pipeline, second pipeline and bypass pipeline, air cleaner, air compressor, intercooler, first valve body, humidifier and galvanic pile connect gradually on the first pipeline, first valve body links to each other with the tail bank on the second pipeline, the parallelly connected both ends that set up at the humidifier of bypass pipeline, the entrance point of bypass pipeline is equipped with the second valve body. Make the air directly get into the pile through the bypass line not passing through the humidifier, improve the temperature of the air that gets into the pile, shorten the time of cold start, no circulation of air in the bypass line after the normal operating, can guarantee fuel cell's normal operating again. According to the scheme, the air is not preheated by an auxiliary means of an external system, the operation is simple, and the manufacturing cost is reduced.
Description
Technical Field
The utility model relates to a fuel cell technical field, concretely relates to cold starting drive of fuel cell system.
Background
When the external environment temperature is below 0 ℃, the start-up of the fuel cell system is cold start, and the cold start of the current fuel cell system is the biggest obstacle restricting the commercialization of the proton exchange membrane: when the system is started at room temperature, water in the system exists in a gas state and a liquid state, but when the temperature is lower than 0 ℃, the water existing in the fuel cell can form ice to prevent electrochemical reaction, and meanwhile, the membrane electrode can expand in volume due to icing to damage an electrode structure and reduce the performance of the fuel cell. Only when the internal temperature of the system rises above 0 ℃, the fuel cell system can normally operate. Therefore, how to raise the internal temperature of the fuel cell system to above 0 ℃ in a minimum time and load the predetermined power is an important index for testing the cold start performance of the fuel cell.
In order to increase the time required for cold start of the fuel cell system, it is now common to preheat the hydrogen and air that participate in the reaction, and to reduce the cold start time by supplying heat to the outside of the stack, the air module, the hydrogen module, and the cooling module. These methods all achieve cold start of the fuel cell by means of an auxiliary means of an external system, but this increases the burden of the system, increases the manufacturing cost, and increases the complexity of the system.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the present invention provides a cold start device for a fuel cell system, which does not require the assistance of an external system and shortens the cold start time on the premise of not increasing the system burden and the manufacturing cost.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a cold starting drive of fuel cell system, includes first pipeline, second pipeline and bypass line, air cleaner, air compressor, intercooler, first valve body, humidifier and galvanic pile connect gradually on the first pipeline, first valve body links to each other with the tail row on the second pipeline, bypass line connects in parallel and sets up the both ends at the humidifier, bypass line's entrance point is equipped with the second valve body.
Further, the first valve body is provided as a first three-way valve.
Further, the second valve body is provided as a second three-way valve.
Further, the tail row and the electric pile are provided with an inlet and an outlet, a second three-way valve at the inlet end of the bypass pipeline is arranged between the first three-way valve and the inlet of the tail row, and the outlet end of the bypass pipeline is arranged at the inlet of the electric pile.
The second three-way valve at the inlet end of the bypass line can be arranged between the first three-way valve and the inlet of the humidifier, and the outlet end of the bypass line is arranged at the outlet of the humidifier.
Further, the bypass pipeline is rotatably connected with the humidifier.
Furthermore, three temperature sensors are arranged on the first pipeline and are respectively arranged at the outlets of the air compressor, the intercooler and the humidifier.
The beneficial effects of the utility model include at least: through the bypass line that connects in parallel beside the humidifier for thereby the air behind the intercooler does not pass through the humidifier and can keep higher temperature entering galvanic pile, shortens galvanic pile intensification time, accomplishes cold start fast, need not preheat the air through with the help of external system auxiliary means, can not aggravate the system burden, has reduced manufacturing cost, and this utility model provides a cold starting drive easy operation moreover.
Drawings
FIG. 1 is a schematic diagram of a prior art cold start apparatus for a fuel cell system;
fig. 2 is a schematic view of a cold start device of a fuel cell system according to a first embodiment of the present invention;
fig. 3 is a schematic diagram of a cold start device of a fuel cell system according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following description will be made in conjunction with the embodiments and drawings of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
Example one
The utility model provides a cold starting drive of fuel cell system, including first pipeline, second pipeline and bypass pipeline, air cleaner, air compressor, intercooler, first valve body, humidifier and pile connect gradually on the first pipeline, first valve body links to each other with the tail row on the second pipeline, the parallelly connected both ends that set up at the humidifier of bypass pipeline, the entrance point of bypass pipeline is equipped with the second valve body.
Further, the first valve body is provided as a first three-way valve.
Further, the second valve body is provided as a second three-way valve.
Further, the bypass pipeline is rotatably connected with the humidifier.
Furthermore, the first pipeline is provided with three temperature sensors which are respectively arranged at the outlets of the air compressor, the intercooler and the humidifier and used for measuring the temperature of the air.
Further, the tail row and the galvanic pile are provided with an inlet and an outlet, the second three-way valve is arranged on a second pipeline, specifically between the first three-way valve and the inlet of the tail row, and the outlet of the bypass pipeline is arranged at the inlet of the galvanic pile.
Among the prior art, low temperature air admission device, after air filter improves its gas purity promptly through air cleaner, gets into air compressor promptly air compressor, and the air compressor machine can improve power for the air and make low temperature air heat up, and the air after the intensification gets into the high temperature air temperature after reducing the pressure boost in the intercooler after going out the air compressor for reduce engine load and improve the air input and then increase engine power, the air that comes out from the intercooler gets into the humidifier and humidifies.
In the process, the temperature of the low-temperature air is T after being heated by the air compressor 1 The temperature of the cold exchanger after the cold exchanger is discharged is reduced to T 2 Due to the large volume of the humidifier, the temperature of the air after passing through the humidifier is reduced to T 3 Ultimate T 1 ＞T 2 ＞T 3 Resulting in lower temperature of the inlet air. Further, the temperature rise of the fuel cell stack is slowed down during the cold start period, and the cold start time is prolonged.
The utility model discloses on the cold starting drive basis of prior art's fuel cell system, at the parallelly connected bypass pipeline in humidifier both ends, wherein the second three-way valve of bypass pipeline entrance point is established between the import of first three-way valve and tail row, the import department at the galvanic pile is established to the exit end of bypass pipeline. When the cold start is performed, the first three-way valve is controlled, so that no air flows between the first three-way valve and the humidifier, namely, the air flows along the second pipeline, and the second three-way valve is controlled to enable the air on the second pipeline to directly enter the galvanic pile through the bypass pipeline, so that the temperature of the air is not reduced before entering the galvanic pile, and the air is not refluxed; and after normal operation, the first three-way valve is completely opened, so that the first pipeline keeps normal air circulation, and the valve from the second three-way valve to the inlet of the galvanic pile is closed, so that the air normally enters the tail row. The operation does not affect the normal operation of the fuel cell, and the temperature of air entering the electric pile is increased on the premise of not needing an external auxiliary heating means.
Example two
The utility model provides a cold starting drive of fuel cell system, the same part with embodiment does not explain again, and the difference lies in:
the humidifier is provided with an inlet and an outlet, the second three-way valve is arranged on the first pipeline and is specifically arranged between the first three-way valve and the inlet of the humidifier, and the outlet end of the bypass pipeline is arranged at the outlet of the humidifier.
When the cold start is performed, the first three-way valve is controlled, so that no air flows through the second pipeline; the second three-way valve is controlled to enable air to jump over the humidifier and directly enter the galvanic pile, so that the temperature of the air can be guaranteed not to be reduced before the air enters the galvanic pile, and the air can be guaranteed not to flow backwards; and after normal operation, the first three-way valve is completely opened, so that the air on the second pipeline is kept to normally circulate, and the valve from the second three-way valve to the inlet of the electric pile is closed, so that the air normally enters the humidifier, and the normal operation of the fuel cell is ensured.
The utility model provides a cold starting drive of fuel cell system can effectually shorten the cold start-up time of fuel cell, makes the air directly get into the pile through increasing behind a bypass line, has reduced the temperature loss of air behind the humidifier, need not preheat the air with the help of the supplementary section of external system simultaneously, the cost is reduced, easy operation.
The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.
Claims (7)
1. A cold start device of a fuel cell system, comprising: the air filter, the air compressor, the intercooler, the first valve body, the humidifier and the galvanic pile are connected in sequence on the first pipeline, the first valve body is connected with the tail row on the second pipeline, the bypass pipeline is arranged at two ends of the humidifier in parallel, and the second valve body is arranged at the inlet end of the bypass pipeline.
2. The cold start-up device of a fuel cell system according to claim 1, wherein the first valve body is provided as a first three-way valve.
3. The cold start-up device of a fuel cell system according to claim 2, wherein the second valve body at the inlet end of the bypass line is provided as a second three-way valve.
4. A fuel cell system cold start device according to claim 3, wherein the tail bank and the stack have an inlet and an outlet, the second three-way valve is arranged between the first three-way valve and the inlet of the tail bank, and the outlet of the bypass line is arranged at the inlet of the stack.
5. The cold start apparatus of a fuel cell system as claimed in claim 3, wherein the humidifier has an inlet and an outlet, the second three-way valve is disposed between the first three-way valve and the inlet of the humidifier, and the outlet of the bypass line is disposed at the outlet of the humidifier.
6. The cold start-up device of a fuel cell system as claimed in claim 1, wherein the bypass conduit is rotatably connected to the humidifier.
7. The cold start device of a fuel cell system as claimed in claim 1, wherein three temperature sensors are provided on the first pipeline, and are respectively provided at outlets of the air compressor, the intercooler and the humidifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220625242.XU CN217641419U (en) | 2022-03-22 | 2022-03-22 | Cold starting device of fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220625242.XU CN217641419U (en) | 2022-03-22 | 2022-03-22 | Cold starting device of fuel cell system |
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| Publication Number | Publication Date |
|---|---|
| CN217641419U true CN217641419U (en) | 2022-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220625242.XU Active CN217641419U (en) | 2022-03-22 | 2022-03-22 | Cold starting device of fuel cell system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115832359A (en) * | 2023-02-20 | 2023-03-21 | 佛山市清极能源科技有限公司 | Cold start method of fuel cell |
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2022
- 2022-03-22 CN CN202220625242.XU patent/CN217641419U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115832359A (en) * | 2023-02-20 | 2023-03-21 | 佛山市清极能源科技有限公司 | Cold start method of fuel cell |
| CN115832359B (en) * | 2023-02-20 | 2023-04-18 | 佛山市清极能源科技有限公司 | Cold starting method of fuel cell |
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